Digitalization enables the automation required to operate modern cyber-physical energy systems (CPESs), leading to a shift from hierarchical to organic systems. However, digitalization increases the number of factors affecting the state of a CPES (e.g., software bugs and cyber threats). In addition to established factors like functional correctness, others like security become relevant but are yet to be integrated into an operational viewpoint, i.e. a holistic perspective on the system state. Trust in organic computing is an approach to gain a holistic view of the state of systems. It consists of several facets (e.g., functional correctness, security, and reliability), which can be used to assess the state of CPES. Therefore, a trust assessment on all levels can contribute to a coherent state assessment. This paper focuses on the trust in ICT-enabled grid services in a CPES. These are essential for operating the CPES, and their performance relies on various data aspects like availability, timeliness, and correctness. This paper proposes to assess the trust in involved components and data to estimate data correctness, which is crucial for grid services. The assessment is presented considering two exemplary grid services, namely state estimation and coordinated voltage control. Furthermore, the interpretation of different trust facets is also discussed.

翻译：数字化实现了现代信息物理能源系统（CPESs）自动化运行所需的技术，促使系统从层级式向有机式转变。然而，数字化同时增加了影响CPES状态的因素数量（例如软件漏洞和网络威胁）。除了功能正确性等传统因素外，安全性等其他因素虽已具有相关性，但仍需整合到运行视角中，即系统状态的全局观。有机计算中的信任是一种获取系统状态全局视图的方法，它包含多个维度（如功能正确性、安全性和可靠性），可用于评估CPES状态。因此，各层级的信任评估有助于实现一致的状态评估。本文聚焦于CPES中信息通信技术赋能的电网服务信任问题。这些服务对CPES运行至关重要，其性能依赖于可用性、及时性和正确性等数据属性。本文提出通过评估相关组件和数据的信任度来估算数据正确性，这对电网服务尤为关键。评估过程以状态估计和协调电压控制这两个典型电网服务为例进行阐释，并进一步讨论了不同信任维度的解读方式。